9991. 'And two rams without defect' means purification of the spiritual or internal man. This is clear from the meaning of 'a ram' as that which is internal and so spiritual in a person, dealt with in 2830; for the internal with a person is called spiritual and the external, natural. Purification is meant because the rams were offered as burnt offerings, and burnt offerings and sacrifices in general represented purifications from evils and falsities, or expiations, burnt offerings and sacrifices of rams representing purifications or expiations of the internal or spiritual man, which are dealt with in what follows in the present chapter, where they are the subject.

A "house" is essentially a container -- for a person, a family, several families or even a large group with shared interests (think of the term "houses of worship.") In the Bible, a "house" is also a container, but for spiritual things rather than natural things. In various uses a "house" can represent part of the mind, the whole mind, a whole person or even a church. The other nuance to the word "house" is that it is generally used in regards to our affections and desires rather than our thoughts and principles. This makes sense; we tend to engage our thoughts and rationality when we are out in the world doing our work, but when we are inside our houses we are driven most by love for our families and the desire to be good to those we love. So "house" tends to represent the things we want and care about -- which are ultimately the things that define us.